aphics over distance. A. inconvenient B. convenient C. uncomfortable D. comfortable 14) If you ____ to your favourite newspapers and magazines, they will be delivered to your house early in the morning. A. buy B. book C. pay D. subscribe 15) Post offices offer a special mail service which is called ____. A. ESM B. EMS C. SEM D. MES 16) Your EMS mail will be ____ in the shortest possible time. A. provided B. delivered C. taken D. caught 17) The message introduces the ____ provided by the National Post Office. A. parcels B. messengers C. expresses D. services 18) I cannot tell you all ____ I heard. A. which B. that C. as D. because 19) I can answer the question ____ you say is very difficult. A. which B. whom C. who D. whose 20) This is Mr. Jones, ____ invention has helped hundreds of deaf people. A. which B. that C. whose D. whom 21) Tom, ____ sits next to me, is from Canada. A. that B. whom C. who D. whose 22) The volunteers, ____ enthusiasm was obvious, finished the work quickly. A. who B. whom C. whose D. that 23) Many scientists have claimed that ____ like music are often good at mathematics. A. children B. children who C. children whom D. whose children 24) My friend, ____ I visited lask week, is taking a holiday soon. A. that B. whom C. which D. whose 25) The doctor re examining a patient ____ was taken to hospital last night. A. which B. who C. whom D. whose 26) A pacifist is a person ____ believes that all wars are wrong. A. who B. whose C. whom D. which 27) My friend, ____ hated horror film, refused to go to the cinema with me. A. whom B. which C. whose D. who C. READING * Read the passage carefully and choose the correct answer. Between the Revolutionary period and the World War I, the United States post office was set out to improve transportation of the post office mails. From those early days to the present, the post office has helped develop and subsidize every new mode transportation in the United States. Transportation has been the most important element in mail delivery. Even when the general public had still suspected of the security of a new means of transportation, the post office experimented with inventions that offered potential for moving the mail faster, occasionally suffering embarrassment, ridicule, or even abuse in the process. As mail delivery evolved from foot to horseback, stagecoach, steamboat, railroad, automobile, and airplane, with intermediate and overlapping use of balloons, and helicopters, post office mail contracts ensured the income necessary to build the great highways, rail lines, and airways that eventually spanned the continent. By the turn of the 19th century, the U.S. Post Office had purchased a number of stagecoaches for operation on the nation’s better post roads – a post road being any road on which the mail travels – and continued to encourage new designs to improve passenger comfort and carry mail safely. 28) The passage is about ____. A. transportation of the Post Office in the US B. the Post Office in the Revolutionary period C. the Post Office in the World War I D. transportation and public ideas 29) According to the passage, the main purpose of the Post Office is ____ A. to develop transportation B. to apply new mean of transportation C. to deliver mail as safely and fast as possible D. to subsidize every new mode of transportation 30) Which means of transportation used in the Post Office is NOT referred in the passage? A. train B. car C. plane D. motorcycle 31) The Post Office ____. A. has never used helicopters in delivery B. contributes income to build highways, railroads, and airways C. has never been the first to use a new means of transportation D. makes no contribution to build roads

Giải giúp em với ạ em đag cần gấp ạ😣😣

Giúp mik vs,mik cảm ơn Bài 5:Cho đơn thức N= -3(1/m+m).x^2.y^4.z^6 ( với m là hằng số khác 0 và x y z ; ; là biến). Xác định m để đơn thức N : a) Luôn luôn dương với mọi x, y ,z khác 0 . b) Luôn luôn âm với mọi x, y, z khác 0 . Bài 6: Viết các ví dụ về đơn thức bậc 7 có các biến là x, y, z

P/s: Mong mn giúp em ạ !!! Cho tam giác ABC có AB < AC. Trên cạnh AC lấy điểm E sao cho AE=AB. Gọi F là trung điểmc của cạnh BE. a) Chứng minh: tam giác ABF = tam giác AEF b) Chứng minh: AF vuông với BE c) Tia AF cắt cạnh BC tại H. Chứng minh HB=HE

Viết từ (7-10 câu ) nêu cảm nhận của em về nhân vật được tác giả khắc họa trong đoạn trích Bài Học Đường Đời Đầu tiên ( trong đó có sử dụng ít nhất 2 cụm động từ )

Tìm x 45,76+x+12,18=96,75 Mn giúp vs ạ

1. Có nên trang điểm bằng cách lạm dụng kem phấn,nhổ bỏ lông mày, dùng bút chì kẻ lông mày tạo dáng không? Vì sao? 2. Những đặc điểm cấu tạo nào của da thực hiện những chức năng đó? ( Mong mọi người giúp đỡ em với ạ )

Tui cần gấp,sẽ vote 5* Cảm ơn!!!!

Tính khối lượng HCl bị oxi hóa bởi KMnO4 biết rằng khí Clo sinh ra trong phản ứng đó có thế đẩy được 25,4gam iot từ dung dịch Nal i boit

Ai biết câu nào thì giúp e vs ạ